feat(vanity): add go/cache + go/core/docs go-import

Resolve the two module paths cmd/core needs from tags:
- dappco.re/go/cache      -> github.com/dappcore/go-cache (go/ subdir)
- dappco.re/go/core/docs  -> github.com/dappcore/docs (go/ subdir)

Each page's head meta overrides the umbrella dappco.re/go default, so
go-get resolves them to their own repos instead of the go monorepo.

Co-Authored-By: Virgil <virgil@lethean.io>

Author: Snider

astro.config.mjs

@@ -85,6 +85,7 @@ export default defineConfig({
 						{ label: 'ansible', slug: 'go/ansible' },
 						{ label: 'api', slug: 'go/api' },
 						{ label: 'build', slug: 'go/build' },
+						{ label: 'cache', slug: 'go/cache' },
 						{ label: 'cgo', slug: 'go/cgo' },
 						{ label: 'cli', slug: 'go/cli' },
 						{ label: 'config', slug: 'go/config' },

src/content/docs/go/cache.mdx

@@ -0,0 +1,53 @@
+---
+title: cache
+description: Storage-agnostic JSON cache backed by any io.Medium.
+head:
+  - tag: meta
+    attrs:
+      name: go-import
+      content: 'dappco.re/go/cache git https://github.com/dappcore/go-cache.git go'
+  - tag: meta
+    attrs:
+      name: go-source
+      content: 'dappco.re/go/cache https://github.com/dappcore/go-cache https://github.com/dappcore/go-cache/tree/main/go{/dir} https://github.com/dappcore/go-cache/blob/main/go{/dir}/{file}#L{line}'
+---
+
+A storage-agnostic, JSON-based cache backed by any [`go/io`](/go/io/)
+`Medium` — local disk, in-memory, or a sandboxed root — so the same cache
+code runs against real storage in production and an ephemeral mock in tests.
+
+## Install
+
+```sh
+go get dappco.re/go/cache@latest
+```
+
+## Import
+
+```go
+import "dappco.re/go/cache"
+```
+
+## Construct
+
+Build a cache over any `io.Medium`:
+
+```go
+r := cache.NewCacheStorage(medium, "cache")
+if !r.OK { return r }
+```
+
+Or register it as a `core/go` service on a `*core.Core`:
+
+```go
+if r := cache.NewService(cfg)(c); !r.OK { return r }
+```
+
+## Sibling packages
+
+- [`go/io`](/go/io/) — the `Medium` contract the cache is backed by
+- [`go/store`](/go/store/) — KV + workspace persistence
+
+## Source
+
+[`github.com/dappcore/go-cache`](https://github.com/dappcore/go-cache) — full source, issues, and releases.

src/content/docs/go/core/docs.mdx

@@ -0,0 +1,33 @@
+---
+title: core/docs
+description: Documentation catalog, ingest, search, and render engine.
+head:
+  - tag: meta
+    attrs:
+      name: go-import
+      content: 'dappco.re/go/core/docs git https://github.com/dappcore/docs.git go'
+  - tag: meta
+    attrs:
+      name: go-source
+      content: 'dappco.re/go/core/docs https://github.com/dappcore/docs https://github.com/dappcore/docs/tree/main/go{/dir} https://github.com/dappcore/docs/blob/main/go{/dir}/{file}#L{line}'
+---
+
+The documentation engine behind the Core help system — catalog, ingest,
+parse, render, and full-text search over the framework's package docs.
+The `pkg/help` subpackage is what the `core` CLI embeds to serve `core help`.
+
+## Install
+
+```sh
+go get dappco.re/go/core/docs@latest
+```
+
+## Import
+
+```go
+import "dappco.re/go/core/docs/pkg/help"
+```
+
+## Source
+
+[`github.com/dappcore/docs`](https://github.com/dappcore/docs) — full source, issues, and releases.